A policeman keep watch as a Japanese convoy drives, as relatives of victims of an attack on the Holey Artisan Bakery and the O'Kitchen Restaurant, visited the site, in Dhaka Bangladesh, July 4, 2016. REUTERS/Mohammad Ponir Hossain

A policeman keep watch as a Japanese convoy drives, as relatives of victims of an attack on the Holey Artisan Bakery and the O’Kitchen Restaurant, visited the site, in Dhaka Bangladesh, July 4, 2016. REUTERS/Mohammad Ponir Hossain

A policeman keep watch as a Japanese convoy drives, as relatives of victims of an attack on the Holey Artisan Bakery and the O'Kitchen Restaurant, visited the site, in Dhaka Bangladesh, July 4, 2016. REUTERS/Mohammad Ponir Hossain

A policeman keep watch as a Japanese convoy drives, as relatives of victims of an attack on the Holey Artisan Bakery and the O’Kitchen Restaurant, visited the site, in Dhaka Bangladesh, July 4, 2016. REUTERS/Mohammad Ponir Hossain